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TIL Tetrachromats (mostly women) can distinguish upto 100 million colours since they posses a 4th type of cone cell , apart from having the regular RBG cone cells

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GARPJ TIL about the Pulsed energy projectile (PAP). A non lethal technology that can could induce cold burn feelings and other forms of painful sensations. Due to public fear of using it aa a torture tool that wouldn't leave any physical evidence, a U.S military program was discontinued.
Z8aPB TIL if you’re trying to kill yourself the odds are against you. On average there are 25 attempts at suicide for every single success. The elderly are more successful at 4:1. While for younger folks (aged 15 - 24), the odds are between 100 and 200 to 1 against.
mxG5o TIL About Abbie Sweetwine, an African American Nurse who helped save passengers in Britain's largest peacetime accident, Harrow & Wealdstone
bX0a TIL that when VCRs/Betamax initially came out, TV and film studios tried to contend that recording content from your television onto tape to watch again later constituted copyright infringement. It took a 1984 Supreme Court case to finally rule it as ‘fair use’.
GY75J TIL of Bass Reeves, the first black U.S marshal west of the Mississippi River. At the end of his career in 1907 at the age of 70, he had arrested over 3000 felons and shot and killed 14 outlaws.